BM 3222 is a desk-top paging microphone dedicated to the applications where local and remote calls have to be managed in installation where several sets are interlinked. Each BM 3222 in-fact allows you to process a local paging on a local independent system while you are sharing a paging line on a remote system, accessible by any BM 3222 on interlocked or 1-above-all priority base. Paging buttons permit to forward the microphone announcements locally or remotely. A dry closing contact is available when announcement is in progress on local or on remote outputs. For instance in an airport terminal BM 3222 allows you to locally call the gate or to page the whole departure area. The same it happens in a loading dock where each platform can deal locally or on global bases. BM 3222 is composed of a desk-top paging unit (BM 3023) and a control box (CB 3002), to be positioned close to the paging console (up to few meters far). All interconnections to local and remote systems are supported by the control box. Chime signal facility and some functional settings are available inside the control box.